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Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Discover how and which salt melts ice the quickest.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea explores whether white light can be separated into different colors.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea investigates if fats add to the flavor of food.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair project idea explores substances that cause a bubble to last longer.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

How do organic materials become soil? This science experiment measures what materials biodegrade.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

This science fair project idea determines if the color of light affects the growth of plants.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this science fair project, students make their own rain gauge to measure rainfall.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.